The Synology DX517 5-Bay Expansion Unit is a portable external HDD that offers hot plug support, hot swap capability, and auto power on/off features. With a sleek black design and compact 3.5-inch form factor, this expansion unit is compatible with PC, Linux, and Mac systems. It supports both HDD and SSD drive types, and includes eSATA and SATA III interfaces for fast data transfer. The package includes an eSATA cable, power cord, and trays, making it easy to set up and expand your storage capacity. Made in Taiwan by Synology, this expansion unit is a reliable and efficient storage solution for your needs.Will ship in original box with all included accessories.